Audio speaker



FIG. 1 is a top and front and right side perspective view of the audio speaker showing the new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevation view thereof,

FIG. 4 is a right side elevation view thereof, the left side elevation view being a mirror image thereof; and,

FIG. 5 is a rear elevation view thereof.

The broken line showing on the drawing disclosure is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a audio speaker, as shown and described. 